Metal furnace



Sept 13, 1.927.

w. ALDERDICE A METAL FURNACE 511a; Sept. 17. 1926 '2 Shets-Sheet 2.

IN VEN T OR m M Bym /GTZRNEY? Patented Sept. 13, 1927..

o NI'TEDL ims PARNT OFFICEQV WALTER AIZD'ERDIOE, 01F BROOKLTN, N'E'W' MK, Amt "1'0 w; CHAIN- nmo, me, or new YORK, n71, s or YORK."

msnrm.

My invention relates to furnaces for melt ing down metal and while not limited to ,a specific use, it is especially adapted for furnaces for melting down type metal; in printing establishm ents.v My invention 'isrelated more particularly to the device vfor pouring theinolten metal from the metal pot into-the moulds in which pigs are cast. VIt is-desir-able to have a movable spout in furnaces of this type in orderthat it may beiswunig in a Wide arc across the mould to pour the metal into as many cavities as possible in the mould-. Heretofore, it has been proposed to attach aspout pivots-11y to the lower end of the metal pot within the furnace; and to extend this spout through an open ingin theside of the shell of the furnace to conduct the metal into the mould. One dis advantage of this construction is that it is diflicult to makea durable and reliable pivotal jointbetween the spout and the metal pot. Furthermore, when the metal has been allowed to cool or chill, the joint between the spout and metal pot becomes rigid and cannot be moved until he metal in the pot and in the spoutvhave been melted. Other devices have been pro osed which it is not necessary to describe in detail, but each of the former devices is open to one or more similar objections. The object'of my pres ent invention is to provide a spout which may be permanently or immovably attached to the metal pot and which is led through an opeing inthe shell of the furnace where it conducts the molten metal into a trough- Iikemember which is adapted tobe moved in the arc of a circle, and this trough-like member is itself provided with a movable s out which moves therewith and which nally conducts the molten metal into the moulch I am enabled to obtain a wide swing with this movable spout amnlatthe same time employ the stationary spout-di rectly connected with .the metal pot. In order to maintain the trough-like member sufliciently heated to prevent the Inetalfrom chilling; Within it and the movable spout, I provide suitable heating means forheating one or both ends of the trough-like memher, and the heating means'is disposedwithin the casing or shell of the furnace in order that the fumes 7 from the burner will ass out with the fumes ot the burner which i s th m l pe F rt me byi rin the detailed to employ n maummazsmmm 11, isms. m 1.. new I ranging heating, means within the shell ofthe casing, all danger of fire is eliminated and the device will meet'the requirements of the tire underwriters; Other objects 'and advantagesof the invention will be set forth description of -my invention hereinaf er V V v lnthe drawings forming part of this app on,

F" are 1 is a front elevation of; portion of a urnaee to which my invention has been enpl hr I gure. Q-is a side elevation thereof, 7 Figure 3 is a. sectional view taken on the line 3-3 of Figure 2, r a

F garo" 4 is a plan View on a larger scale, of t trough member, removed iron]. the furnace, Y 1 v Figure 5 is an inverted view-of a portion thereof, 1 1 y Figure 6 is a. sectional view takenon the Iine66ofFigure4,amd 'onal view taken on the I Figure 7 is it soon line 7 of Figure 4.

I have iHilQffitQd my invention applied, to I a metal furnace such as may be used tot melting down type metal for casting into plgs. shown drawing, this fornace corn rises a casing or shall 1 which encloses e metal pot 2 shown in dotted lines 'lnF' ure 2; and. it will be understood that some orm of heater is provided below the metal pot sndin practiee'it is common as burners for this purpose. The metal ws from the metal pot through the central connection 3 and it must be con-.- ducted beyond the shell into position to be poured into vsuitable rmmlds. I, have vided a stationarypipe or spout 4 whic is fixed to the outlet conneotim 3 of the metal pot 1n any suitable manner, and as this The trough 6 is preferably made. of cast metal other materials may be used;

and of; body 7 curved. horizontal 1 11 the narrat e o h s. rem l is provided with inner and outer, preferably concentric, walls 8, 9 and at each end of the trough there is an end wall 10 connected between the front and rear walls, these several walls forming a trough-like compartment 11, adapted to receive and temporarily hold the molten metal. I have shown this compartment as tapered, as shown m Figure 6, so that it is wider at the top and decreases in widthtowards the bottom. The

' inner and outer walls 8, 9 in the preferred construction, are formed on the arcs of concentric circles and are preferably less than a semi-circle in extent. Beyond the ends of the compartment 11 the trough member 1s provided with extensions 12 which serve the purpose to be hereinafter described; and these extensions are preferably curved on arcs-of smaller radii than the arc of'curvature of the remainder of the trough memher, and are so positioned, as shown in Figure &, that when the trough member is rotated in the opening of the casing, these extensions 12 will move in and out of the slot 18 in the shell, which slot is substantially-no larger than if the slot were made merely to accommodate the portion of the trough containing the metal compartment.

The trough member is supported in a horizontal position by means of brackets 14 which are bolted or otherwise secured against the wall of the casing l of the furnace. The brackets have secured to them a horizontal, arcuate plate 15 on which the trough member directly rests. There are brackets 16 bolted to the inner and outer faces of a the supporting plate '15.

the trough member by means of bolts 17 and these extend downwardly to straddle the arcuate plate 15 and are'turned horizontally at their lower ends 18 toward each other, to engage under the plate 15. These latter brackets hold the trough member in position upon the supporting plate 15 and also permit the trough member to be rotated thereon. The rotation of the trough member is limited by means of a s'topmember 19 which is secured to'the under side of the trough member and which is adapted to contact with one of the brackets 16 in the extreme position of the trough member upon A similar stop member may be provided adjacent the opposite end of the trough for engaging another of the brackets 16 to limit the swing of the trough member in the opposite direction. V

The trough chamber 6 is preferably inclined fromthee'nds of the trough'to'ward tne center; and 'in Figure 1 I "have shown by the dotted line 20 how the bottom wall of the trough thus inclines downwardly toward the center. trough member there is an outlet open ng 21 in line with a spout connection 22 wh ch latter may be cast integrally with the trough member, as shown at Figure 7 This connection member has attached to it a pour- At the center of the showna handle 25 attached by a set screw 26 to the connection member 22 which handle is adapted to be used for swinging the trough member around upon its supporting plate 15; and this motion carries the movable spout 23 with the trough member.

There will be a tendency for the metal to chill slightly in the trough member on account of its exposure to the air, and this is overcome by heating the trough member to prevent the metal' from chilling. The trough member, as above described, is provided with extensions 12 which project inside the wall of the furnace. hen the trough member is turned upon its support some part of it will always be projected within the furnace wall, even though one end withdraws to the outside of the furnace wall. I have arranged within the furnace Wall a pipe 27 which is adapted to be connected with any source of fuel supply such as. a gas feed pipe; and this pipe is connected with a branch pipe 28 extending horizontally near the front of the furnace wall 1; This cross pipe is provided at opposite ends with upturned sections the upper ends of which form gas burners 29 which are disposed inside of the furnace wall, and adacent the slot 13 in which the trough mem ber moves. The burners are so placed that the flame from each will be projected against the under side of both of the extension members 12 when the trough member is in its intermediate position. When the trough member is swung to the right or left one or the other of the extension members 12 will be temporarily removed from its particular burner, but the opposite burner will continue to heat either the opposite projecting member 12 or the under part of the trough. It will be apparent from the above that at all times the trough member as a whole is heated by either both burners 29 when the trough is in the central position, or by one of the burners when the trough member is swung to the right or left. By placing these metal pot. Furthermore, with the burners placed within the furnace, danger of fire to distribute the heating effect upon'it.

In using the present device the burners 29 I will be lighted and the trough member will be placed in the central position shown in Figure 3, so that the flames from the burners will strike under the extensions 12 and heat lit will prevent the metal from chilling while itis temporarily flowing in it. i A suitable mould is placed within the path of the movable spout 23 and this spout is then positioned to discharge the molten metalin the cavity of the mould. If the mould has a series of cavities, usually the movable spout will be placed over the cavity at one side and the spout will then be shifted as the metal flows into the mould, until all the cavities have been filled. After the burners 29 have heated the trough member and the metal in the metal pot 2 has been raised to the desired degree for pouring, the valve (not shown) commonly used for controlling the discharge of the metal from, the connection 3 at the bottom of the metal pot, is

opened to allow the molten metal to flow through the stationary spout 4. This spout will discharge the metal into the chamber 11 of thetrough regardless of the angular position of the latter. If the trough is in the central position, the stationary-spout will discharge themetal into the center of the trough and adjacent the discharge opening 21 and in this case the metal is less likely to spread out in this chamber and will flow through the outlet 21. The metal discharged, irom the trou h chamber through the con nection 22 will flow through the movable spout 23 and discharge into the mould chamber. As above stated, the movable spout, with the trough, may be swung while the metal is flowing in order to discharge the metal into the various compartments of the vmould. lVhen the mould has been filled, the valve referred to will be closed, and this will shut the flow of metal through the stationary spout. A portion of the metal may remain in the trough chamber until the next pouring operation; and the heat from the flames of the burners 29 acting on the trough member will. prevent this metal from chilling. The operations above described may be repeated as often as desired.

It will be noted that in this construction there are no joints in which the metal can chill, and interrupt theoperation of the-derice. It also will be apparent that I have avoided the use of a swivel connection between the metal pot and the first spout, so that a non-leaking joint may be formed tween these members. Also, by heatingthe trough member the metal will not chill therein. With the heating means for the trough member-arranged inside the furnace, danger of. fire is eliminated. By providin the extensions 12 curved inwardly from t e are of the trough chamben'the latter may beswung Within the slot .13 in the furnace wall which is about the length that would be required for the chamber portion of the trough alone. lVith the present device I am able to provide a wide swing for the movable spout in order to cover a mold of large dimensions.

Having described my invention, what I claim is:

l. A metal furnace having a casing and a metal pot therein a stationary member associated with the metal pot for conducting the molten metal to the casing of the. furnace, a movable trough member having a chamber arranged to receive the molten metal from said stationary member, and a pouring spout to receive the molten metal from said chamberr 2. A metal furnace having a casing and a metal pot therein, a member associated with the metal pot. for conducting the molten metal. to the casing of the furnace, a movable trough member having a, chamber arranged to receive the molten metal from said conducting member, and a pouring spout movable with said trough member and arranged to receive the molten metal from said chamber.

A metal furnace having a casing and a metal pot therein, a conducting member associated with the metal pot for conducting the molten metal to the casing of the furnace, a movable trough member having a chamber with an open top arranged to receive the molten metal from said conducting member in the various positions of the said trough member, and a pouring spout movable with said trough member and receiving the molten metal from said chamber.

4. A metal furnace having a casing and ametal pot therein, a conducting member-associated with the metal pot for conducting the molten metal to the casing of the furnace, a curved and movable trough member having a chamber arranged to receive the molten metal from said conducting member, and a pouring spout to receive the molten metal from said chamber.

5. A metal furnace having a casing and a metal pot therein, a conducting member associated with the metal pot for conductingthe molten metal to the casing of the furnace, a movable trough member having a chamber to receive the molten metal from ago said conducting member, said trough member being of arcuate shape, means for guiding said trough member to rotate in an arcuate path, and a pouring spout movable with said trough member and receiving the molten metal from said chamber.

1 6. A metal furnace having a casing having a slot and a metal pot in said casing, a conducting member associated with the metal pot and projecting through said casing for conducting the molten metal to the exterior of the furnace, a trough member movable in the slot of said casing'and projecting beyond said casing, said trough member having a chamber arranged to re ceive the molten metal from said conducting member, and a pouring spout outside of said casing moving with said trough mem her and arranged to receive the molten metal from said chamber.

7. A metal furnace having a casing having a slot and a metal pot in said casing, a spout stationarily connected with the metal pot and projecting through the wall of said casing, an arcuate trough member projecting exteriorly of said casing and movable in the slot in the casing, said trough member having an open chamber arranged to receive the molten metal from said stationary spout, and a pouring spout movable with said trough member and receiving the molten metal from said chamber.

8. A metal turanoe having a casing and a metal pot therein, said casing having a slot, a spout stationarily connected with the metal pot and projecting through the wall of the casing and discharging downwardly, an arcuate trough member having an open chamber to receive the metal from said spout, said trough member projecting from said casing, means for guiding said trough to move in an arcuate path through said slot in said casing, and a pouring spout movable with said trough member and receiving the molten metal "from said chamber.

9. A metal furnace having a casing and a metal pot therein, a spout stationarily connected with themetal pot and projecting through the wall oi said casing, an arcuate trough member projecting exteriorly of said casing and receiving the metal from said spout, a pouring spout movable with said trough member, said trough member having a chamber for receiving the molten metal from said first spout and provided with a bottom wall inclined toward the outlet of said movable spout.

10. A metal furnace having a casing and metal pot therein, a spout connected With the metal pot and projecting through the wall of said casing, an arcuate trough member having an open chamber to receive. the metal from said spout, and a pouring spout movable with said trough member and connected with the central portion of said chamber.

11. A metal furnace having a casing and a metal pot therein, means for conducting the metal trom said metal pot to the Wall of said casing, a movable trough member having a chamber to receive the metal from said conducting means, a movable pouring spout associated with said trough member, and means for heating said trough member.

l2. A metal furnace having a casing and a metal pot therein, means for conducting metal :l'rom said pot to the wall of said casing, said casing having an opening, a trough member movable in said opening and projectinginto the casing, said trough member having a chamber to receive the metal from said conducting means, a pouring spout associated with said trough member and means inside said casing for heating said trough member.

13. A metal iurnace having a casing provided with an opening, a metal pot in said casing, a member for conducting metal from said pot through the wall of said casing, a movable, arcuate, trough member projectin from said casing and having a chamber to receive the metal from said conducting member, a pouring spout associated with said trough member, and means in said casing for heating the opposite ends of said trough member.

14. A metal furnace having a casing provided with an opening, a metal pot in said casing, a stationary member associated with the metal pot tor conducting molten metal to the eX'crior of said casing, an arouate trough member having a chamber to receive the molten metal from said conducting member outside said casing, means for guiding said trough member to move horizontally in an arcuate path through said opening in the casing, said trough member having end extensions extending inwardly from the are of said trough member, a pouring spout associated with said trough member, and burners arranged within said casing and adjaoent the path of said trough member for heating the latter.

Signed at the city, count-y and State of New York, the 9th day of September, 1926.

lVALTER ALDERDICE.

CERTIFICATE OF CORREGTEQN.

Patent No. 1,642, 351. Granted September 13, 1927, to

WALTER ALDERDIGE.

It is hereby certified that the above nunthered patent was erroneessly issued to "Alfred W. Charming, Inc., of New Yerk, N. Y", a ilsrssretien of New York," as essignee at the entire interest in said inventien, Whereas said Letters Patent sheuid have been issued to the inventer seiei Aidertiicsfl as sole owner 0? said invention; and that the said Letters Patent sheets be read with this correction therein that the same may eenferrn tn the restart! of the case in the Patent Office.

Signed and seated this 17th day of January, J,

pen

M. J. Mssre,

Seal. Acting Csmmissieeer 0f Patents. 

